Why have other people claimed I have sent them emails that I know I haven't?

Answer

Your PC or Mac may have a virus or a "trojan", or may have been used as an "open relay server". We advise you to use virus protection software to ensure you have no trojans on your computer.

Alternatively, your email address may have been used by spammers, where, in order to hide their own identity, they will have sent spam emails which will appear to have come from you. They can do this by using your email address as their "Reply To" address (this is called "email spoofing").